Verified answer

[tex]\color{blue}{ANSWER ✿}[/tex]

In the given compounds the alkyl group has +I effect and Br- group has –I effect.

Hence, the strength of the given acids increase as; (CH3)2CHCOOH < CH3CH2CH2COOH < CH3CH(Br)CH2COOH < CH3CH2CH(Br)COOH.

DON'T REPORT.

Explanation:

EWG (

e

−

− withdrawing groups) increases the acidic strength, whereas EDG (

e

−

− donating groups) decrease the acidic strength.

b. Nearer is the EWG to the source [(−COOH)group], stronger is the acid, i.e., α− substituted halo acid stronger than β−orγ− substituted halo acid.

Increasing order of acidic strength:

(III)<(IV)<(II)<(I).